Time-recorder.



J. W. BRYCE.

APPLICATION FILED JAILN, 1908. RENEWED APR. 11, 1911.

1,075,627. Patented 0013.14, 1913.

14 SHEET S-SHEET 1.

5" ELAPSER-DECTIEEEN.

WITNESSES: INVENTOR W BY ATTORNEYS CDLUMHU} PMNOORAPH CO" WASHINGTON. D. C.

J. W. BRYCE.

TIME RECORDER.

APPLIUATION FILED 11111.17, 190s. RENEWED APR. 11, 1911.

1,075,627, Patented 0011111913.

14 SHEETS-SHEET 2 COLUMBIA PLANOORAPH CO..WASHINGTON. D. c.

J. W. BRYGE.

- TIME RECORDER.

APPLICATION FILED JAN. 17, 1908. RENEWED APR. 11, 1911.

1,075,627, I Patented Oct. 14, 1913.

I 14 SHEETS-SHBET 3. l 1

. wmgssw 4; I WlfJVENTOR BY K W' ATTORNEYS COLUMBIA PLANOGRAPH 60., WASHINGTON. D. c.

J. W. BRYCE.

TIME RECORDER.

APPLICATION FILED JAN. 17, 190B. RENEWED APR.11, 1911.

1,075,627, Patented Oct. 14, 1913.

14 SHEETS-SHEET 4.

INVENTOR W KBAYMTW KM? ATTORNEYS WITNESSES coumant PLANDGRAPH (IO-,WASHINOTON, D. c.

J. W. BRYCE.

TIME RECORDER.

APPLICATION FILED JAN. 17, 1908. RENEWED APR. 11, 1911. 1 075, 27, Patented 001;. 14, 1913.

14 SHEETSSHEET 5.

COLUMBIA PLANOGRAPH 60.,wAsH1NuroN, D. c.

J. W. BRYCE. TIME RECORDER.

APPLICATION FILED JAN. 17,1908. RENEWED APR.11,1911.

Patented 0013. 14, 1913.

14 SHEETS-SHEET 6 WITNESSES:

co., WASHINGTON, n. c.

COLUMBIA PLANOGRAm-l J. W. BRYCE.

TIME RECORDER.

APPLIOATION FILED JAN.17, 190B. RENEWED APE. 1.1 191i.

Patented 0ct.14, 1913.

14 SHEETSSHEBT '7.

COLUMBIA PLANQdRAPh co.,w,\sHmaTON. D c.

J. W. BRYCE.

TIME REGOEDER.

APPLIOATION FILED 51mm, 1908. RENEWED APR. 11, 1911.

Patented 0ct.'14, 1913.

14 SHEETS-SHEET 8.

WITNESSES: W a W COLUMBIA PLANOGRAPH CO.,\\'ASHINGTON, D; c.

J. W. BRYCE.

TIME RECORDER.

APPLICATION FILED JAN.17, 190a. RENEWED APR. 11, 1911.

1,075,627. Patented 0@1;.14,1913.

14 SHEETSSHEET 9.

WITNESSES:

CCCCCCCC PLANOGRAPH co., WASHINGTON, D. c.

J. W. BRYCE.

TIME REGORDER.

APPLICATION FILED JAN.17,1908. RENEWED APR.11, 1911.

14 SHEETS-SHEET l0.

2? 27 262 WITNESSES: INVENTOR K ATT $15 s' J. W. BRYCE.v

TIME RECORDER.

APPLICATION FILED 11.11.17, 1908. RENEWED APR. 11, 1911. 1,075,627.

Patented 0013. 14, 1913.

14 SHEETS-SHEET 11.

8% ATTORNEY V INVENT R WITNESSES H a CDLUMEIIA PLANOGRAPH CO-,WASHINC1TON. 0. c1

J. W. BRYCE. TIME RECORDER.

APPLIGATION FILED .TAN.17, 1908. RENEWED APR.11, 1911.

'1 075 627 Patented Oct. 14, 1913. 14 SHEETS-SHEET 12.

2 :j ij:

Q [A 221 8 i WITNESSES: I INVENTOR 1 1 WWW COLUMHH PLANOGRAPH C0-.WASIHNGTON. n c.

BY W J. W. BRYCE.

TIME RECORDER. APPLICATION FILED JAN.17, 190s. RENEWED APR. 11, 1911.

1,075,627. Patented 001.141, 1913.

1 2 SHEETSSHEET 13.

ATTORNEYS |NVENTOR COLUMBIA PLANOGRAPH co., WASHINGTON. n. c.

J. BRYCE.

TIME RECORDER.

Patented Oct. 14, 1913. 14 SHEETSSHEET 14.

ATTORNE S APPLICATION FILED JAN. 17, 1908. RENEWED APR.11 1911.

NN MRN QN R w w WITNESSES UNITED STATES PATENT ormon.

JAMES W. BRYCE, 0F BROOKLYN, NEV] YORK.

TIME-RECORDER.

Application filea January 17, 1908, Serial No. 411,224. Renewed. April 11, 1911.

To (ZZZ whom it may concern Be it known that 1, JAMES W. BRYCE, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Time- Recorders, of which the following is a specification.

hfiy invention relates to time recorders. It is of especial value in connection with elapsed time indicating machines, although in some of its features it is not limited to use in such machines.

It has for its object to provide an elapsed time indicating machine in which the elapsed time indicating mechanism is controlled in its movement one way by the clock movement and is moved the other way by manually operated means and in which preferably the elapsed time indicating mechanism is driven by the clock movement and normally represents the true time; also to provide in such a machine means for verifying the manual operation and preferably means for printing such verification upon a suitable card or other record surface; also to provide means for temporarily shifting the position of the card or other record surface tocause the printing of different parts of a time record upon difierent parts of the. card or other record surface; also to provide means for printing upon a card the time of the in or first operation of the machine upon one line and for printin upon another and adjoining line the time or the out or second operation of the machine and the elapsed time between the two operations and preferably for also printing again, but this time upon the said second line, the time of the in or first operation of the machine for purposes of verification; and also gen erally to improve and simplify the mecha nism of elapsed time indicating machines.

My invention consists in the novel de vices herein shown and described.

In the drawings accompanying this specification and forming part hereof, I have shown my invention as embodied in a machine for printing upon a card the elapsed time between two different operations of the machine, although in some of its features at least my invention is not limited to use in such a machine.

I will now proceed to describe the specific embodiment of machine shown in the draw ings.

Specification of Letters Patent.

Patented Oct. 14,1913.

Serial No. 620,461.

Referring to such embodiment, Figure 1 is a front view of such a machine, including card racks for the card, such as are now in general use with card time recorders. Fig. 2 is a side view of thedevice with the casing partly broken away, disclosing a side view of the clock movement. Fig. 3 is a front view, on a larger scale, of the interior mechanism of the recorder proper, with the case in section, and is taken on the lines 33 of Fig. 1. Fig. 4 is a vertical section taken on the lines 4.t of Fig. 3. Fig. 5 is a sectional view of the mechanisms on shafts 108, 119 and 139., which shafts carry the various time type wheels and certain parts of their driving connections, the shafts being shown in this view as separated from each other for the sake of clearness, but the various wheels on the different shafts being in the exact alinement they bear to each other in the machine, Fig. 4: showing the true position that the shafts occupy in the machine. Fig. 6 is a perspective view of the minute elapsed time type wheel 169 and the minute verifying wheel 1&1, together with certain parts of the mechanism used for controlling them. Figs. 7 and 7 represent a modification of the manually operated handles and their connections. Figs. 8 and 9 are detailed views of the sub tractor mechanism, Fig. 9 being a detailed section on the lines 99 of Fig. 5. Fig. 10 is a detailed view of the clock drive and the finder wheel for locking the type wheels while a record is being taken. Fig. 11 is a. detailed sectional view of the hour transfer mechanism, taken on line 1111 of Fig. 12. Fig. 12 is a side view of the mechanism shown in Fig. 11. Fig. 13 is a detailed view of the mechanism used for moving the card lift up one point at the end of each day, or the day transfer mechanism as it is commonly called. Fig. 1% is a side view of the same mechanism. Fig. 15 is a detailed view of the means for raising the card lift one-half a point whenever a card is rung out on the machine and also showing the hammer cut-out mechanism. Fig. 16 is a detailed view of the card holder or receiver and its guides and the means for operating the hammer cut-out. Fig. 17 is a detailed view showing the cross-over mechanism connected with the manually operated handles 7 and 8. Fig. 18 is a detail of the printing hammers showing the means for giving a proper printing blow.

Fig. 19 is a detail of the full stroke pawl and plate in side view. Figs. 20 and 21 are details of the ink ribbon mechanism, the former being a face View and the latter a side view. Fig. 22 is a detailed view of the two manually operated time levers, the minute one being shown in section. Fig. 23 is a face view of these two levers, with the case of the machine in section showing the spring actuated pieces for locking the levers in any position. Fig.24 is a detail of the ink ribbon feed mechanism. Figs. 25, 26 and 27 represent the preferred form of card used with my improved device, Fig. 25 being a face view of the card handed to the workman before the in operation, Flg. 26 being the same card after the in operation and Fig. 27 the same card after the out operation. In the card of ig. 27 several spaces are shown filled in to show how the card would appear if different jobs had been worked upon by the same workman or the same job. commenced and discontinued several times and upon difi'erent days.

Before proceeding to describe the mechanism in detail, I will, for the sake of clearness and a better understanding of the operation of the machine, briefly describe the various acts performed by the operator in ringing in and out upon my improved machine and what is accomplished thereby.

1 is the casing of my improved machine shown in the drawings.

9 and 10 are two card racks, 9 being the in and 10 the out card rack, each being provided with spaces for cards numbered in the usual manner. hen the operator desires to ring in, as for example, either in entering the factory at any time or in be ginning a job, he takes the card bearing his number out of the out card rack. This card may be one of any suitable material, size or shape and provided with any suitable data. In the preferred form of card employed, that shown in Figs. 25-27, the card is provided with parallel vertical columns for in and out for morning and afternoon and for elapsed time for morning and afternoon and also with parallel horizontal spaces for different days of the week and preferably two parallel horizontal spaces for each day for a purpose presently to be described. In the machine shown, the card lift 57 (Figs. 13 and 15), forming the bottom of the card holder 4, is in the ordinary way automatically raised vertically, by the clock movement, a distance each day equal to that of the distance between the horizontal spaces representing the difierent days of the week, which distance is, as shown on the card, equal to two of the horizontal spaces. The operator having taken his card from the f out rack, inserts it into the card holder 4, first, however, having moved the knob 5,

which is rigidly connected to the card holder 4, to the proper position to designate either a. m. in or p. m. in, whichever the case may be. The knob 5 rests in notches or depressions in plate 6, the plate carrying the proper designations as shown in Fig. 1,

corresponding with the different periods. The movement of the arm 5 to the right or left, has the effect of moving the card holder containing the card so as to bring the proper vertical columns opposite the printing hammers. After this has been done, the workman pulls the main operating handle 2 forward and down as far as it will go, permitting it to return to its normal position, which it does through the action of a spring 286. He now withdraws his card and places it in the in rack in the proper receptacle. The effect of this first operation has been to print upon the card the time of the operation of the machine in the proper in column, either morning or afternoon. Fig. 26 shows the card after such operation, and here the machine was operated at 9.49 a. m. on Sunday, these facts being indicated by the relative location of the figures 9.49 upon the card at 282. At the conclusion of the job or on his departure in the morning or afternoon, the workman withdraws his card from the in rack and inserts it in the card holder 4, first seeing that knob 5 is in the proper out position, either a. m. or p. m. Before placing the card in the card holder, or afterward, if he has taken note of the in time as appearing on the card, he moves the hour and minute manually operated levers 7 and 8 in accordance with the hour and minute of the in operation of the machine as already printed on the card. He does this by pulling the handle 7 down forward toward him, until an index finger 32 at its side (see Fig. 22) is opposite and enters a groove on the stationary graduated scale 12 at the side representing the hours, opposite the hour 9 in the example herein given, the hour of the first or in operation, and by pulling down the minute lever 8 until it is similarly opposite the proper number on the stationary minute graduated scale 13, which in the example given is 49, the index finger 33 entering the notch at that point. The operation of these two levers 7 and 8 has had the effect of bringing upon the printing line type, representing the elapsed time between the two operations, the in and the out operations of the machine, upon hour and minute elapsed time type wheels 168 and 169 and has also had the effect to bring upon the printing line the type representing the hour and minute 9.49 of the first or in operation of the machine upon hour and minute verifying type wheels 140 and 141 (see Fig. 5). The means for effecting these results will be presently described. In this connection, I would merely add that preferably and as shown the elapsed time type wheels 168 and 169 are normally connected with the clock movement 3 and are normally driven by it in one direction so that the elapsed time type wheels at any moment normally represent the true time. The operation of the handles 7 and 8, however, through mechanism which will presently be described, moves these elapsed time type wheels a distance dependent upon the time, 9.49, of the in or first operation of the machine, the hour wheel, as shown in my preferred form, being moved back 9 points or hours and the minute wheel 19 points or minutes. This, in efiect, subtracts the in time from the out time and causes the two elapsed time type wheels, upon the second operation of the machine by the workman, to present upon the printing line the hour and minute representing the elapsed time between the two operations, or one hour greater than such time. Theoperator then pulls operating lever 2 forward, as before. This causes the card lift supporting the card temporarily to move vertically upward a distance equal to one-half of the vertical distance bet-ween the different days of the week, bringing upon the printing line the horizontal space forming the lower half of the space opposite Sun, and also causes to be printed in this space under the proper in column the in time, as shown 9.329, see 283 Fig. 27, thus giving a verification of the proper manual operation by the work man of the levers 7 and 8, and in the proper out column the time of the second or out operation of the machine, as shown 11.4% at 284-, and also causes one to be subtracted from the hour wheel when necessary and causes to be printed in the proper elapsed time column the elapsed time between the two operations, as shown 1.55 at 285.

It will be observed that all that is required of the workman in the operation of the machine is to see that the knob 5 is in the proper notch at each operation of the machine, to move the handles 7 and 8 in the out operation in accordance with the indications upon the card of the in time and to move the operating handle 2 at each operation. The rest of the work is done by the machine automatically, elapsed time being computed automatically by it and tl e various times being printed upon the card in their appropriate places and columns without any mental effort on the part of the operator other than the mere setting and operation of the parts above described. Certain other results are also automatically accomplished by the handle 2, such as the al'ining and locking of the type wheels, the feeding of the ink ribbon, etc., which will be de scribed in detail later on.

I will now describe the various parts in detail.

The card holder and connections-The card receiver 1 is preferably vertically arranged. lt may be of any suitable construction. As shown, it is made of an upper or flaring mouth-piece 1, side pieces 287, threesided in crosssection, which receive and guide the two sides of the card (see Figs. 3, 5 and 16) and a floor or lift 57 fast on a rocking shaft 60 (see Fig. 15) and adapted to be raised automatically from day to day and also temporarily at each out operation of the machine, as will be presently described. toward the lower part of side pieces 28'? there is provided an irregular shaped connecting piece 3'7, provided with cam surfaces for rendering certain of the. printing devices operative or inoperative, as will be presently described. The entire card holder is mounted so to slide hori- Zontally sidewise on guide rods 37 and 38, as shown in Fig. e, the lower ends of side pieces 28? being provided with a U-shaped piece straddling the rod It is moved sidewise by means of a hanc le 5 connected by rod 58 to the framework of the card holder. The notches in plate 6 enable the card holder to be moved to exactly the rightposition and to be held firmly in that position. In Fig. 5 the card holder, with a card 2'77 in position in it, is shown in cross-section opposite the vajious type wheels.

The time type wheels and their operating me07zam'sm.These are illustrated in Figs. 8, 1, 5 and 6. The time type wheels which print the time of the in and out operations, as shown, are the hour type wheel 14% and the minute type wheel 14-" These are loosely mounted on the type wheel shaft- 108. They are driven by the clock morement 3, which may be of any suitable form and may be located at any suitable point. it is only diagrammatically represented in the drawings. Any suitable connection between the clock movement and the time type wheels 1 1 1- and 14'? may, of course, be employed. That shown is as follows: 1? is a driving shaft driven by the minute side of the clock movement. At its lower end it has a universal joint 195, of the usual con struotion, uniting it to a short upright shaft- 31 and rotating that shaft. Shaft 31, sup ported in bearings in strips 20 and 21 secured to the side of the framework, carries at its lower end spur-gear 18, which meshes with spur-gear 19 fast on minute shaft- 119 of the recording mechanism, as clearly shown in Fig. 6. Shaft 119 is journaled in the side frame 28, runs across the machine and is journaled in bracket fastened to the opposite side frame 29, as shown in Fig. Shaft 119 is thus driven synchronously with the minute side of the clock movement. 181 is a collar fast on the shaft to keep it in alinement. Mounted slightly in advance of the minute shaft 119, and somewhat lower in the machine (see Fig. 4), is the type wheel shaft 108, upon which the time wheels are mounted. Shaft 108 is stationary, being mounted fast in side frames 28 and 29. Also mounted on this shaft are the elapsed time type wheels 168 and 169 and the hour and minute verifying type wheels 140 and 141; 139 and 171 are collars fast on the shaft and arranged to keep the type wheels in their proper positions on the shaft.

The minute time type wheel 147 is loosely mounted on shaft 108 and fast upon its hub is gear wheel 145. In mesh with this gear wheel is a gear wheel 146 fast on minute shaft 119. By these means, the minute time type wheel 147 is driven by the minute side of the clock movement.

The hour time typewheel 144 is driven by the clock movement by the following d8".

scribed mechanism: Gear wheel 142 is mounted on the hub of type wheel 144, loose on type wheel shaft 108. Gear 142 is driven by gear wheel 143 fast on hour shaft 132. This hour shaft is given an intermittent rotative movement once each hour by means of a cam 180 fast on minute shaft 119. The connections between the cam 180 and shaft 132 are as follows: On a stud 241 projecting from side frame 28 is pivoted a lever 240, one end of which rests on cam 180. At its lower end lever 240 carries pivoted to it at 242 a pawl 243 (see Fig. 11), the latter engaging the teeth of ratchet wheel 245 loose on hour shaft 132, a spring 244 between lever- 240 and pawl 243 holding the latter in engagement with ratchet wheel 245. A click pawl 24.6, pivoted to the framework at 248 and held in engagement with the teeth of ratchet wheel 245 by spring 247 prevents backward rotation of ratchet wheel 245. Fastened securely to ratchet wheel 245 is plate 250 having a cam groove 253 cut in it. Immediately back of plate 250 is an arm 249 fast on shaft 132. To its outer end is pivoted a pawl 254 adapted to engage the teeth of a stationary ratchet wheel 159 secured to a bracket 160 projecting from the side frame 28. A spring 251 connects the outer ends of plate 250 and arm 249. A pin 252 projects sidewise from pawl 254 into cam slot 253 of plate 250. Slot 253 is cut at an angle so that one end of the slot is nearer the center of shaft 132 than is the other. The operation of these parts is as follows: Cam 180 re volves once each hour with minute shaft 119 and through lever 240 and pawl 243 feeds forward'ratchet wheel 245 and plate 250 one point. Arm 249 cannot partake of this gradual movement as pawl 254 is in engagement with one of the teeth of stationary ratchet wheel 159. But as plate 250 gradually moves, the inclined slot 253 gradually.

forces pin 252 and with it pawl 25.4 outward from shaft 132 until at the end of the hour the nose of pawl 254 clears the teeth of ratchet 159, whereupon spring 251 causes arm 249, and with it shaft 132, to jump forward one point. As this forward movement takes place, pin 252 and pawl 254 are again forced inward so that the nose of the pawl engages the neXt tooth of ratchet 159. There is thus a step by step forward moveaentof shaft 132 and with it is moved the wheel 143 and gear wheel 142 and hour time type wheel 144 at the end of each hour.

Hour shaft 132 is journaled loose in side frame 28 and at the other end in bracket 134 secured to the side frame 29. 161 is a collar serving to keep the shaft in its proper place.

By the above described mechanism the hour and minute time type wheels 144 and 147 are always driven synchronously with the clock, the type in each wheel upon the printing line opposite the card 277 in the card slot and the ink ribbon strip 172 always representing the true time. The means for delivering a hammer blow to cause the printing from these time type wheels and the other type wheels will be described later on.

The elapsed time type wheels and connecti0ns.Any suitable elapsed time indicating mechanism may be employed. That shown in the drawings consists of hour and minute type wheels 168 and 169 respectively. These type wheels are loosely mounted on type wheel shaft 108 (see Fig. 5). They are, preferably and as shown in the drawings, driven synchronously by the clock and normally represent the true time, that is to say, the type upon the hour and minute elapsed time type wheels upon the printing line at any time normally representing the correct hour and minute of time. In the form of device shown, these elapsed time type wheels are moved at each out operation of the machine a distance dependent upon the time of the in operation of the machine by the same operator or on the same job. Preferably this is done by moving them backward or in a direction the reverse of that in which they are driven by the clock movement. This, in effect, subtracts the in time from the out time, causing the elapsed time type wheels to indicate the elapsed time between the two operations and this time will be represented by the type upon the hour and minute elapsed time type wheels appearing upon the printing line and in the form of machine shown in the draw ings this elapsed time will be printed upon the card in the proper column for elapsed time.

The means shown by which the elapsed time type wheels 168 and 169 are normally driven synchronously by the clock are illus trated in Figs. 5 and 6. Any suitable means may, of course, be employed for this pur pose. I prefer, however, to use in such connection differential gearing and connections between one side of the differential gear and the clock movement for operating the diiferential gearing and connections between the differential gearing and the elapsed time indicating mechanism to transmit such motion to the latter to cause it normally to move synchronously with the clock movement. Such preferred form I have shown in the drawings and will now describe. Mounted upon the minute shaft 119 is a differential gearing, of which 179 is the spider loosely mounted on shaft 119 and secured at its outer parts by bolts 188 (Fig. 6) to the ring portions 173 on one side and 176 on the other, between which rings are carried in the usual manner the intermeshing gears 186 and 187 of the differential. With these gears mesh on one side gear wheel 178 fast on shaft 119 and on the other side gear 177 loosely mounted on the shaft. Upon the outer periphery of ring 173 gear teeth are cut, as clearly shown in Fig. 6. These teeth mesh with the teeth of gear 170 secured to the elongated hub of the minute elapsed time type wheel 169. In the normal operation of the parts, the clock movement through shaft 119 and gear 178 operates the differential one way, causing the rings 17 6 and 173, with their pinions 186 and 187, to rotate at half the speed of the gear 178 in the well known manner. Of course, it will be understood that during this operation gear 177 is held stationary. Gear 170 is shown of half the diameter of that of gear 173, so that the rotary motion of shaft 119 and gear 178 is transmitted through the differential to the gear 170 and minute elapsed time type wheel 169, causing the latter to rotate synchronously with shaft 119 and with the minute side of the clock movement and causing wheel 169 normally to represent the true time in minutes. The iour elapsed time type wheel 168 is normally driven from hour shaft 132, prefer ably through another differential, in the following manner: As above described, the hour shaft 132 is rotated once each hour Fast on this shaft is the spur gear 148, which forms one side of the hour difierential gearing. 152 is the spider of this differential gearing and its hub is loosely mounted on shaft 132. The spider carries two rings 149 and 150 secured to it by studs the same as those marked 188 in the minute differential described above. On the outer edge of ring 150 gear teeth are cut to mesh with the gear 167 connected with the hour elapsed time type wheel 168 on type wheel shaft 108. Pinions are carried by a pair of studs eX- actly as described above for the minute differential. One ofthese pinions appears in section at 55 (Fig. 5) and meshes with spur gear 151 and the other meshes with spur gear 1&8 on the other side of the difierential. Spur gear 151 is connected with hour handle 7, as will be presently described, and normally remains stationary except as operated by said handle. Gear wheel 167 is loosely mounted on the hub of the hour elapsed time type wheel 168 (Fig. 5). It is connected to ratchet wheel 122, mounted on the elongated hub of type wheel 168 by the spring 166, secured at one end to piece 166 and at the other end to ratchet wheel 122. Piece 166 is fast to 167. This connection communicates rotary movement from gear 167 to ratchet wheel 122, and through the spring 165 to the hour elapsed time type wheel 168 so that the latter is advanced one point at the end of each hour, in accordance with the movement of hour shaft 132, but the connections between gear 167 and ratchet 122 and wheel 168 are sufficiently elastic, owing to the spring connection, to permit one to be sub tracted from the hour elapsed time type wheel, whenever that is necessary during the computation of the elapsed time during the out operation of the machine. The detailed mechanism shown by which this subtraction is accomplished will be presently described.

From the above description it will be seen that the minute and hour elapsed time type wheels are normally driven synchronously with the clock movement and the type upon the printing line of these two type wheels normally represents the true time. In the form of machine shown in the drawings, this result is accomplished through two difi'erential gears, a minute difierential and an hour differential.

In order to compute th elapsed time between two different operations of the machine, an in operation and a corresponding out operation, 1. have shown means for moving the elapsed time type wheels preferably backward a distance corresponding to the time of the first or in operation. The means shown for this purpose are manually operated and are preferably two movable pieces, such as handles 7 and 8 on the front of the machine, adapted to be operated manually. As the elapsed time type wheels, in the machine shown in the drawings, normally stand at the true time, they of course, at the time of the out operation of the machine and before they are moved backward, represent the time of the out or second operation of the machine. In order to cause them to compute and to indicate the elapsed time, 1 move them backward a distance corresponding to the time of the first or in operation. do this by providing connections between each of the handles 7 and 8 and its respective elapsed time type wheel and then move each handle a distance "corresponding to the hour or minute respectively of the time of the in operation. This movement is preferably accomplished by moving the elapsed time type whels backward, although it may also be accomplished by moving them forward the complement of the backward movement, as will be described later on. This movement is also preferably accomplished through the differential already explained, each handle being connected to a gear at the opposite side of the differential from the side with which the clock-work is connected. The effect of this operation is to move the elapsed time type wheels a distance corresponding to the time of the in operation, or in other words, to subtract from the time of the out operation the time of the in operation, the type wheels indicating and printing such elapsed time. The detailed mechanism shown for this purpose will now he described. It is illustrated especially in Figs. 4, 5, 6, 7, 7 22 and 23. Referring to the devices of Figs. 4, 5, '6, 22 and 23, 8 is the minute manually operated lever. It is mounted fast on shaft 182, the latter having bearings in the side frames of the machine. Alongside of the handle is a graduated stationary scale 13 mounted on a plate 14 in the front of the machine. The graduated scale 13 is provided with notches and numbered to correspond with the minutes, as shown in Fig. 22. On the side of lever 8 I have shown a piece of flat metal adapted to exert a spring pressure against the notches in scale 13 adapted to hold the lever in any; set position into which it is moved. A similar spring pressed piece 32 is provided for the hour handle 7 and this is adapted to take into notches in a similar stationary graduated scale 12 representing the hours. Fast on shaft 182 is a sector 175 having teeth adapted to mesh with gear wheel 174 fast on the hub of gear wheel 177 of the minute differential, as clearly shown in Figs. 6 and 5. When handle 8 is pulled downward and forward, through shaft 182 it rocks sector 175 and this turns gears 174 and 177 of the minute differential in an opduring this movement gear 178 is held by the clock movement, gear wheel 173 will be rotated backward or in the reverse direction in which it is normally driven by the clock movement and through gear 170 will turn the minute elapsed time type wheel 169 backward. The distance which that type wheel will be moved backward will depend upon the extent of movement of the handle 8. As the workman in this operation will move handle '8 a distance corresponding to the minute of the time of the first or in operation, as shown on his card, the minute elapsed time type wheel 169 will be moved back a distance representing the minute of that time. 288 is a sleeve secured to shaft 119 to hold gears 174 and 177 and the other parts in their proper places on the shaft. Handle 8 will be held in the position, to which it is moved, by spring 33 and the notches on graduated scale 13. The movement of the minute handle 8 also moves the minute verifying type wheel 141, as will be presently described. The hour handle 7 is similarly connected with one side of the hour differential to move back the hour elapsed time type wheel 168 in accordance with the hour of the in time. The specific connections between the handle and the differential shown are as follows: Handle 7 is mounted upon a sleeve 183 loose on shaft 182, see Fig. 17-. 185 is a sleeve also loosely mounted on shaft 182, but rigidly connected to sleeve 183 by cross-over rod 184. The purpose of having two sleeves 183 and 185 with a cross-over connection is to permit of the use of sector 135 fast on rod 182, for a purpose presently to be described, and also to permit the sectors on shafts 182, 154, 1-36 to be arranged in their proper positions in the machine and yet to have th handles 7 and '8 placed alongside of each other on the front casing of the machine. Sleeve 185 carries rigidly secured to it sector 154. The latter is provided with teeth, just like sector 175, which engage with gear 153 fast on the hub of gear 151 of the hour difi'erential. The movement of handle 7 causes sector 154 to move in accordance with its movement and to move gear 151 on one side of the hour differential the opposite way from 'which gear 148 is normally driven by the clock. As previously described for the min ute difierential, this operation moves back the hour elapsed time type wheel 168 the distance represented by the movement of the handle 7, and as this movement is made by the workman to correspond with the hour of the in operation, it will subtract the hour of the in operation from the hour of the out operation, leaving the difference or the elapsed time in hours represented by the type on Wheel 168 standing upon the printing line.

In the form of my improvement heretofore described, the manually operated handles 7 and 8 move their respective elapsed time type wheels a distance corresponding to the hour or minute of the time of the in operation by moving the type wheels backward. In Figs. 7and 7 1 show a modification in which this is accomplished by the manually operated handles movin the type wheels forward the complement of such distance. Of course, this is the full equivalent of the backward movement described above. In order to cause sector 175 to move gear 174 so as to cause gear wheel 173 to move in the same direction when operated 

